EXPERIMENT STATION BULLETINS. 



531 



TKEPAKATION OF SPRAY MTXTUKES. 



Commercial Concctitratcd Lime-Sulphiir is now very extensively nsed 

 by Michigan fruit-growers. Many may be saved by making the "home- 

 made" if much spraying is to be done, but in times of labor shortage the 

 advantages of the "Commercial" apparently outweigh in the minds of 

 the majority of fruit-growers the money saving. 



There are several brands of the "Commercial" concentrated lime-sul- 

 phur wash now on the market. Under "Agricultural Laws of Michigan" 

 a label on each container must state plainly "the correct names and 

 percentage amounts of each and every ingredient of the insecticide or 

 fungicide having insecticidal or fungicidal properties and the total per- 

 centage of inert ingredients present." 



The "strength" or "Baume Test" in concentrated lime sulphur may be 

 known from the ''Total Percent Sulphur''^ given on the label of commer- 

 cial manufacture. 



When Total Percent ^^ulpJinr is 26, Baume Test is 3.3. 

 When Total Percent ^nlphnr is 25, Baume Test is 32. 

 When Total Percent Sulphur is 24, Baume Test is 31. 

 When Total Percent Sulphur is 23, Baume Test is 30. 

 When Total Percent Sulphur is 22, Baume Test is 29. 

 When Total Percent Sulphur is 21, Baume Test is 28. 



When the Baume Test is known, make the dilutions as follows: 



Where the directions are for sfron^r For summer spraying of apples, 



limr fiulphur for San Jose and other 

 scale insects and the plants are dor- 

 mnnt or just before the buds open. 



cherries and European varieties of 

 plums. 



•>.) 



32 

 31 

 30 

 20 



28 

 27 



51/2 gallons 



534 



6 



01/4 



634 



7 



gallons 

 gallons 

 gallons 

 gallons 

 gallons 

 gallons 



33-32 or 31 

 30-29 or 28 

 27-26 or 25 

 24-23 or 22 



114 gallons 

 iy2 gallons 

 1% gallons 

 2 gallons 



For Summer Spraying of Pears. 



33-32-31 

 30-29-28 

 27-26-25 

 24-23-22 



1 gallon 



114 gallons 



11/2 gallons 



1% gallons 



